While announcing their newest motherboard, the P5N32-SLI Premium/WiFi-AP, Asus accidentally explained the reason behind three PCI Express slots: an NVIDIA physics card. Both ATI and NVIDIA have been working for some time with Havok studios in search of a physics rendering solution. Havok is well known for creating physics engines for games like Half Life 2. The Asus board is designed to run a physics card alongside with Quad-SLI, and was built with the NVIDIA Nforce 590 chipset. The board is compatible with Core 2 Duo and has 4 DIMM slots for DDR2 533/667/800.

all this new card means is its something they will now leave off the combind graphics card, with all the power needed to run one of the regular graphics card surely the ppu could have been added to the cards themselves but rather than give the consumer an actual combined product advance they have decided to to make you pay more, it wouldnt surprise me if they decided to make it an essential for games. so an new VGA set up will cost near $800 for 1 top range vga and one ppu card

your not going to be able to use a sound card... and the guys making [physics cards should jump from pcj to pcix16 and take advanage of the third slot....sorry for the typos i m using an onscree keybard